GB1305015A - - Google Patents

Info

Publication number
GB1305015A
GB1305015A GB1305015DA GB1305015A GB 1305015 A GB1305015 A GB 1305015A GB 1305015D A GB1305015D A GB 1305015DA GB 1305015 A GB1305015 A GB 1305015A
Authority
GB
United Kingdom
Prior art keywords
reducing agent
mineral
clays
minerals
march
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1305015A publication Critical patent/GB1305015A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/40—Compounds of aluminium
    • C09C1/42—Clays
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/08—Intercalated structures, i.e. with atoms or molecules intercalated in their structure
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Detergent Compositions (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

1305015 Treatment of minerals ENGLISH CLAYS LOVERING POCHIN & CO Ltd 24 March 1970 [26 March 1969] 15925/69 Heading C1A The brightness of a silicate mineral having a layer-lattice crystal structure, especially one of the kaolin group, is improved by first contacting it in aqueous suspension simultaneously with (1) a substance capable of forming an intercalation complex with the mineral and (2) a reducing agent capable of converting ferric ions in the mineral to ferrous, then decomposing the intercalation complex under non-oxidizing conditions. Hydrazine or a derivative of the formula NHR 1 .NHR 2 or NH 2 .NH.CO.R 3 , where each of R 1 , R 2 and R 3 is H or C 1 -C 6 alkyl, may act as both intercalating and reducing agent or other intercalating agents, e.g. urea, formamide or acetamide, may be used with a separate reducing agent. The complex may be decomposed by washing with water containing an oxygen scavenger, then with water alone and drying. The process is particularly applicable to kaolinitic clays, e.g. china clays with a particle size below 2À5 microns, but can also be applied to minerals of the montmorillonite group.
GB1305015D 1969-03-26 1969-03-26 Expired GB1305015A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1592569 1969-03-26

Publications (1)

Publication Number Publication Date
GB1305015A true GB1305015A (en) 1973-01-31

Family

ID=10068024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1305015D Expired GB1305015A (en) 1969-03-26 1969-03-26

Country Status (2)

Country Link
DE (1) DE2014224C3 (en)
GB (1) GB1305015A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6270564B1 (en) 1998-02-24 2001-08-07 Kemira Chemicals Oy Process for the bleaching of pigments

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6270564B1 (en) 1998-02-24 2001-08-07 Kemira Chemicals Oy Process for the bleaching of pigments

Also Published As

Publication number Publication date
DE2014224B2 (en) 1978-08-24
DE2014224A1 (en) 1970-10-29
DE2014224C3 (en) 1979-05-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee